Internet Media Lab, Corporate Research, Huawei Technologies - - PowerPoint PPT Presentation

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Network-Assistance and Server Management in Adaptive Streaming on the Internet

Media Lab, Corporate Research, Huawei Technologies The 4th W3C Web &TV Workshop, March 12-13, 2014

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Adaptive Streaming over the Internet

 Enable efficient and scalable delivery of multimedia services

 leverage on the existing Internet infrastructure and Web technologies  client-driven (pull) nature of streaming adaptation, over HTTP

 DASH (Dynamic Adaptive Streaming over HTTP)

 ISO/IEC 23009 standard from early year 2012  endorsed by many industry standards and organizations, and

deployed in YouTube, Netflix, Hulu …

 freely available browser-based player, dash.js, leveraging W3C media

source extensions for extensible, adaptive, multi-bitrate playback to a browser (e.g., IE and Chrome)

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Current: Client Managed DASH

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Access Engine Media Engine Monitoring Function Delivery Function HTTP Requests HTTP Responses(Segments) Adaptation Logic Request Parser

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Network

Server Client

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Issues with Client Managed DASH

 No Network/Server involvement in adaptation management

 No guaranteed and coherent QoE, when involving many clients of

different types and screens from different vendors

 No global optimization, in allocating network and server resources

across many different clients

 No Network QoS support for differentiating users and

services to facilitate viable business models for network

• perators

 No incentives for network operators to participate, to guarantee QoS

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Streaming Market Development

 Service providers collaborate with network operators to

provide best end-to-end streaming experiences

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“Netflix faster on Comcast, after deal”

http://money.cnn.com/2014/ 03/11/technology/netflix- comcast/

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New: Server Managed DASH

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Adaptation Logic Access Engine Media Engine Monitoring Function Request Parser Delivery Function Server Client HTTP Requests with Adaptation Parameters HTTP Responses(Segments)

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Network

Move “Adaptation Logic” from Client to Server

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New: Network Assisted and Server Managed DASH

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Adaptation Logic Access Engine Media Engine Monitoring Function Request Parser Delivery Function Server Client HTTP Requests with Adaptation Parameters HTTP Responses(Segments)

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GRB Allocation Network Requesting GBRs

Client requests Network to provide guaranteed bitrates(GBR) Move “Adaptation Logic” from Client to Server

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User Cases Supported by NA/SM



QoS Differentiation in Services and Subscriptions



Different levels of subscriptions from different streaming service providers will receive different network assistance and guarantee in network QoS

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Dynamic Events

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Dynamic event description updates

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Customized and late binding Advertisements



Just-in-time event/content description updates for dynamic Ad insertion

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Forced play out

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Client supplies play out evidence for Server/Network to verify before fulfilling subsequent segment requests

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Spatial adaptation within full-field view



Client specifies arbitrary ROIs or view angels

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What need to be Standardized @ W3C

 Parameters

 service description  subscriber information  network QoS information

 Interfaces/Protocols

 support for server adaptation management requests and responses  support for network QoS assistance request and responses

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Thank You

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